Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
Some 2007-2009 Mazda CX-7, 2007-2009 Mazdaspeed3, and 2006-2007 Mazdaspeed6 vehicles may experience hesitation or surging when accelerating after engine warm-up. These symptoms may be noticed by the customer before a MIL illumination with DTC P0134, P2096, P2097, P2177, P2187, P2188, P2195, or P2237 is stored in memory. This may be caused by a front O2 sensor signal failure due to a crack on the primary or secondary O2 sensor cells.
To diagnose the P2096 Mazda code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
The Powertrain Control Module (PCM) monitors the target Air Fuel Ratio (A/F) fuel trim when under the target A/F feedback control. If the fuel trim is less than the specification, the PCM determines that the target A/F feedback system is too lean, and the Diagnostic Trouble Code (DTC) will be set.
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